WT Microelectronics (TWSE : 3036) today announced its monthly sales for May 2014 totaled NT$8.369 billion, a decrease of 4.54% from April 2014 and an increase of 12.99% over May 2013. Sales for January through May 2014 totaled NT$40.145 billion, an increase of 16.04% compared to the same period in 2013.